Many operating engine environments generate temperatures in excess of 550 ºF (288 ºC). Above this temperature, many of the design features and materials used in high temperature accelerometers change considerably.

For 550 ºF to 1,200 ºF (288 ºC to 650 ºC) operating environments, PCB® offers a range of both single- ended (measurement output as a signal and ground) and differential (measurement output as a plus and minus signal) sensors. The former tend to be smaller and more suitable for short-term testing needs, while the latter are more appropriate for long-term monitoring applications.
Obviously, the environments in which these sensors operate are challenging.
In fact, in some of the highest temperature operating environments, the operating sensor measures vibration signatures while glowing red hot!

These sensors are complemented by both lab-grade and in-line charge amplifier systems. This differential charge amplifier is suitable for interfacing to any of PCB’s differential charge output accelerometers.

The accelerometers and charge amplifiers summarized here are only a small subset of the available sensors that are documented in PCB’s Test and Measurement Catalog or on our web site at www.pcb.com. Of course, custom designed accelerometers are always available.